Undocumented
a. 无正式文件的, 无事实证明的
🗣️ 情景例句
What can I do to cheer her up?
我要怎么做才可以让她振作起来？
Oh? Where were you?
哦，上哪儿去了？
They have found that it is connected with the passage of days and the phases of the moon.
他们发现代码与昼夜更迭和月亮圆缺有关，